If Jesus is a teacher only, then all He can do is to tantalize us by erecting a standard we cannot come anywhere near. But if by being born again from above we know Him first as Savior, we know that He did not come to teach us only. He came to make us what He teaches we should be. The Sermon on the Mount is a statement of the life we will live when the Holy Spirit is having His way with us.
Studies in the Sermon on the Mount: God's Character and the Believer's Conduct (ed. Discovery House, 2011) - ISBN: 9781572935617